Interesting concept. I would feel completely comfortable thinking my covenant is around 9k. My surprise was that my work with the covenant ended with a more polished edge than I have achieved with my Japanese natural stones from Alex. It is pretty much all subjective I feel, different hands I believe will produce different
results even with stones being equal. Ultimately I think this stone would be the equal of many of the stones
razor honing afficionado's look to because they have proven to be ranked very highly. A highly polished edge, absent any stiations, does not necessarily correlate to a better shave but that was my goal in getting to know
this particular stone.